Russian president says any direct clash with Nato troops would be ‘global catastrophe’ as he says 220,000 will be called up. This live blog is now closed

Here are some of the latest images of the war that have been sent to us over the newswires from Ukraine and beyond.

Today is Defenders Day in Ukraine, and the US ambassador to Kyiv, Bridget A Brink, has issued a video message. In it she says:

We honour the brave men and women who have served in the defence of Ukraine’s freedom. This year, this holiday has a special symbolic meaning. Since 24 February, virtually every citizen of your country has in some way become a defender of your land, your lives, your future.

I know Russia’s war doesn’t stop at the line of contact. And I honour the bravery and resolve of all Ukrainians, men and women, children and the elderly, professional soldiers and volunteers, representatives of every aspect of society from the home front to the frontline. All of you play a vital role in defending Ukraine. We know Ukraine will prevail.

Exclusive: Survey shows strong support within alliance for tougher sanctions and Nato aid, but more pro-Russia views elsewhere

• Russia-Ukraine war: latest updates

Nearly eight months into Vladimir Putin’s war on Ukraine, citizens in core western alliance countries show little appetite for the kind of concessions to Russia that might form part of an eventual agreement to end the fighting, according to a major survey.

The YouGov-Cambridge globalism project, which gauged public opinion in 25 of the world’s largest countries, also found strong support for maintaining, and often toughening and expanding, military and economic measures against Moscow.

Deputy PM says residents will be helped to move away from southern Ukrainian region partly occupied by invaders

• Russia-Ukraine war: latest updates

Moscow has announced it will evacuate Kherson after an appeal from the Russian-installed head of the region, raising fears the occupied city at the heart of the south Ukrainian oblast will become a new frontline.

Marat Khusnullin, a Russian deputy prime minister, told state television on Thursday that residents would be helped to move away from the region in south Ukraine, which remains only partly occupied by invading troops due to a successful Ukrainian counterattack in recent months.

EU foreign policy chief rules out nuclear response to Putin but vows powerful answer from military. This live blog is now closed

• Russia announces Kherson evacuation, raising fears city will become frontline

The admission of Ukraine to Nato could result in a third world war, the deputy secretary of the Russian security council, Alexander Venediktov, told the Russian state Tass news agency in an interview on Thursday.

Tass cited Venediktov as saying:

Kyiv is well aware that such a step would mean a guaranteed escalation to a World War Three.

Apparently, that’s what they are counting on - to create informational noise and draw attention to themselves once again.”

Putin says he is ready to supply the EU with gas via Nord Stream 2; head of IAEA says morning power station outage caused by Russian shelling

Serhai Haidai, Ukraine’s governor of Luhansk, has posted an update on Telegram on Ukraine’s military progress in the occupied Luhansk region. He writes:

The armed forces of Ukraine are moving forward little by little. The Russians are shelling our positions mainly with rocket and barrel artillery. The occupiers are building a multi-layer defence line in Luhansk region, the entire first section of the front line is mined by them. Our military has already encountered the first wave of partially mobilised Russians.

The Federal Security Service, together with the Investigative Committee, established that the organiser of the terrorist attack on the Crimean Bridge was the Main Intelligence Directorate of the Ukrainian Defence Ministry, its head Kyrylo Budanov, employees and agents.

Currently, five citizens of Russia, three citizens of Ukraine and Armenia, who participated in the preparation of the crime, have been detained within the framework of the criminal case.

This is Martin Belam taking over the live blog in London. You can contact me at martin.belam@theguardian.com